Solid ink



FIG. 1 is a top plan view of a solid ink;

FIG. 2 is a front view of the solid ink;

FIG. 3 is a bottom plan view of the solid ink;

FIG. 4 is a left side view of the solid ink;

FIG. 5 is a right side view of the solid ink;

FIG. 6 is a rear view of the solid ink; and,

FIG. 7 is a perspective view of the solid ink. 

The ornamental design for a solid ink, as shown and described. 